Page 198 - Innovator's Science-8
P. 198

3.  What is formed when male and female gametes fuse?                               3.  a    b   c    d
                   a. Gene                                 b. Seed
                                                                                                   4.  a    b   c    d
                   c. Zygote                               d. Embryo
               4.  What protects Earth from harmful solar radiation?
                   a. Oxygen                               b. Greenhouse gases
                   c. Magnetic field                       d. Clouds

            B.  Fill in the blanks.                                                                       Observational Skills
               1.  The Earth is located in the habitable zone of the ___________.

               2.  ___________ is the reproductive structure in flowering plants that contains ovules.
               3.  In ___________ offspring are identical to the parent.
               4.  The protective layer that blocks UV rays is called the ___________ layer.
               5.  ___________ is the process by which plants prepare food using sunlight.

            C.  State whether the given statements are True (T) or False (F).                            Problem Solving Skills

               1.  Earth's crust is the thinnest layer of the planet.
               2.  Mercury is hotter than Venus due to its thick atmosphere.
               3.  Bacteria can reproduce through sexual reproduction.
               4.  Earth's gravity is quite strong to hold an atmosphere.

               5.  Reproduction causes variation in asexual reproduction.
            D.  Short answer type questions.                                                            Decision-making Skills

               1.  Why is Earth called a unique planet?
               2.  What is the Greenhouse Effect?
               3.  Differentiate between sexual and asexual reproduction.
               4.  How does the magnetic field protect life on Earth?

               5.  Why is water important for life on Earth?

            E.  Long answer type questions.                                                              Critical Thinking Skills
               1.  Describe the features that make Earth suitable for life.
               2.  Explain how the Earth's atmosphere supports life.
               3.  What are the differences in reproduction in plants and animals?

               4.  How do living and non-living components work together to sustain life on Earth?
               5.  Write a note on sexual reproduction in flowering plants with an example.

              Project Ideas                                                                                     Exploration

            •  Create a 3D model of the solar system showing planet sizes and temperatures.

              Life Skills                                                                                        Inference

            •  Study and present on India's Mangalyaan mission and its findings about Mars.
              Enhance your Life Skills                                                                   Mental Development

            •  Grow plants from cu ngs (e.g., money plant) and observe the growth stages.

                                                                198
                                                               Science-8
   193   194   195   196   197   198   199   200